Traffic-signal.



1.. A. BLACK.

TRAFFIC SIGNAL.

APPLICATION FILED AUG-3. 19H. 1,525,083, Patented Dec. 11,:1917.

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Specification of Letters Patent.

?atented Dec. it. 1391?.

Application filed August 3, 1917. Serial No. 184.,221.

To all whom it may concern." 7

Be it known that I, JosnrH ARTHUR BLACK, a citizen of the United States. residing at Charleston, in the county of Charles ton, State of South Carolina, have invented certain new and useful Improvements in Trafiic-Signals, of which the following is a description, reference being had to the accompanying drawings forming a part hereof.

My invention relates to traiiic signals such as are used at street crossings to indicate to automobiles and other vehicles whether or not they can be allowed to cross the intersectin street. Such traiiic signals usually comprise a vertical rod supported in a base in which it may rotate, carrying at its top cross arms on which are placed the words Stop and Go, and provided with a handle by which the crossing policeman may rotate the rod first in one direction and then in the other to display the stop signal or the go signal as he may choose.

My invention has for its object to provide an improved device for the purpose indicated in which the vertical rod carrying the signal arms may be operated by foot power or from a distance by a cord or by hand. further object of the invention is to provide a device for the purpose indicated which may readily be taken down for convenience in transportation and quickly and easily assembled for use. A further object of the invention is to provide a construction which will be simple and inexpensive to construct and which will not readily get out of order and in which the signal can be rotated in one direction only and can be rotated only snih ci'entlv to change the signals by a simple operation.

With these and other obiects hereinafter set forth my invention consists in the construction and combination of elements here inafter described and claimed.

Referring to the drawings:

Figure 1 is a perspective view of signal embodying my invention.

Fig. 2 is a top plan view of the arms.

Fig. 3 is a top plan view of the supporting standard.

Fig. 4 is a detail view of the upper end of the vertical rod with the lantern and signal arms removed,

Fig. 5 is a top plan view of the upper end of the e al ro a traiiic signal.

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and form a firm base for the operating parts I of the device. This base carries at its center a vertical tube 2 adapted to receive in its open upper end a. vertical cylindrical rod 3 which is adapted to rotate within the tube 2-. This vertical rod i3 carries at its upper end a pair of crossed signal arms 4 and 5 and above these arms is adapted to support a lantern 6 provided with red lenseson two sides;

The upper end of the tube 2 is provided with a series of projections 8 each having one edge 9 vertical and the other edge 10 inclined from the top 0'? the vertical edge 9 of one projection to the base oi: the vertical edge 9 of the next projection. llhese projections 8 are four in number. l he vertical rod '3 is provided with a series oi? pins ill preferably four in number adapted to between the proiections S. The portion oi the vertical rod below the pins 11 is of less length than the tube so that the pins will fall to the bases of the projections. 7

Supported on a. slide ll' on the tube 2 be low the projections pivoted a lever 13 the forward or free of which is providedan upwardly extending pro iection id having its upper edge inclined as shown at 15 to form cam surface. To this i ree end the lever is attached the upper end oi spring and this free end of the lever is curved to approximate the curvature of the surface of the tube.

lt hen the slide 1'? is ra a or rear end of lever 13 is depressed the upper. end of slide 1? will raise the pins nearly to the level of the tops of the projections 8 and the cam surface 15 will act on one or the pins it to if" the vertical rod the level of l until the pins ll are inst ab 8 and the earn the tops of the pro ections will serve as an iv line to cause the pins lifted by the cam to start to move toward the movement will carry the ised nd the outer lit) Cal pried q projjob-mms by the 1". rod to (l san (sot 1m 1 1 L uau 1 1 a) 11mm ed thercen 1 omprismg a wins, a base .05! nyln;

5 mic ti 6 rear in L 00% lever moms mi pom:

inucd ii' 1511i; to throw 11c pm a card and in Jase 1 any mw er in 0 receive the s 121? (P1113 ax 2h lever of Th9 m'ward the to v' r (K Ovidcd.

1611 y the recess (1 F :11? The Width S 1 1 O 1 S S 9 naaopas jection on the cylindrical tube comprising a lever pivot-ed on the slide.

7. A trafiic signal comprising a vertical rod carrying signal arms, a base having a cylindrical tube arranged thereon to receive the lower end of the vertical rod having a series of projections at its upper end, a pin carried by the vertical rod adapted to engage said projections, a slide carried by the cylindrical tube for lifting the vertical rod to disengage the pin and means acting" on the pin for rotating it over the top of a projection on the cylindrical tube comprising a lever pivoted on the slide and means for lifting the slide and operating said lever.

8. In a traflic signal a pair of signal arms formed of strips of sheet metal interlocked midway of their length so as to be capable of folding together.

In testimony whereof I afiix this 31st day of July 1917.

JOSEPH ARTHUR BLACK.

my signature 20 

